A variable declared inside the for loop control can not be referenced out side the loop.
True
False
Correct Answer :
A. True
Related Questions
The length of a string object 's1' can be obtained using the expression s1.length.
True
False
The name of a Java program file must match the name of the class with the extension Java.
True
False
class.forName(...) creates an instance of java ODBC driver
True
False
JSP files creates ________________
html files
html files and java files
java files and class files
None of the above.
In the code below, what data types the variable x can have?
byte b1 = 5;
byte b2 = 10;
x = b1 * b2;
int short
The import statement is always the first no comment statement in a Java program files.
True
False
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
A catch can have comma-separated multiple arguments.
True
False
A thread can make second thread ineligible for execution by calling the suspend (-) method on second thread.
True
False
An EJB is a server-side component that encapsulates the business logic of an application
True
False
What is wrong in the following class definitions?
abstract class print {
abstract show();
}
class Display extends print {
}
abstract show();
}
class Display extends print {
}
Nothing is wrong
Wrong Method show() should have a return type
Wrong Methods show() is not implemented in Display
Wrong Display does not contain any members.
Submit button always fires doPost(...)
True
False
A constructor must always invoke its supper class constructor in its first statement.
True
False
The name of the RMI compiler is ___________
rmicom
rmic
jrmi
none of the above
If you want to assign a value of 99 to the variable year, then which of the following lines can be used within an <applet> tags?
number=getParameter(99)
<number==99>
<param = radius value ==99>
Which of the following string can be used as mode string for creating a RandomAccessFile object?
"rw"
"wr"
"0"
'w''
A package is a collection of
classes
interface
editing tools
classes and interfaces
forName() is a static factory method
True
False
Message-Driven beans act as a listener for the Java Message Service API, processing messages synchronously
True
False
The default case is always required in the switch selection structure.
True
False
For all insert, update, delete, query operations on a database, ResultSet object creation is mandatory.
True.
False.
An individual array element that is passed to a method and modified in that method will contain the modified value when the called method completes execution.
True
False
When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
Which of the following will produce a value of 10 if x = 9.7?
floor(x)
abs(x)
rint(x)
round(x)
The break statement is required in the default case of a switch selection structure.
True
False
DriverManager.getConnection("jdbc:odbc:dsn_name") method does not depend on the class.forName(...) method.
True.
False.
Any method in a supper class can be over ridden in its subclass.
True
False
When we invoke repaint () for a Component, the AWT invokes the method:
draw()
update()
show()
paint()
In order to connect to a database through java program we must create _______-
Connection, Statement, ResultSet
Connection, ResultSet
Statement< ResultSet
Connection, Statement
What is error in the following class definitions?
abstract class xy {
abstract sum(int x, int y) {
}
}
abstract sum(int x, int y) {
}
}
class header is not define properly
constructor is no defined
method is not defined properly
no error